[Taskmaster]

Originally Posted by TheSt|G

You can look at the module via coding.

Can't wait to turn mine off when I pop the LSD in finally.

I haven't pushed the car yet, so I don't know what behaviors to expect.

[TheSt|G]

Originally Posted by TheAxiom

I haven't pushed the car yet, so I don't know what behaviors to expect.

Well, at a base level, it works by reducing power while a real LSD works by redirecting power. Also blows through rear brake pads like it is its job.

[e90pilot]

Originally Posted by TheAxiom

Got stuck in the mud today and spun one wheel. How do I know if I have ELSD?

Even if you don't have ELSD you can use DTC mode that will tap the brake of the spinning wheel effectiy acting like an LSD. If DSC is fully on it will cut the throttle but won't tap the brake. It's not true ESLD but it will get you out of the mud.

[Taskmaster]

So did anyone notice that out Itrader ratings read (1) (2) (3) on this page? Just saying.

[accel]

Not sure I completely follow this topic,... If one has 328i LCI, does that mean eLsd is there and available, or some special coding is necessary?

My story is - awhile back I managed to have one of the rear wheel s slightly in the air. In either in modes DSC, DTC, all off I wasn't able to move my car forward. The wheel was spinning and that was it. 2010 328i. MT, SP if that matters. I came to conclusion my car didn't have any anti slip kind of device.

On another hand, once I accelerated in the sand, and checked my tracks afterwards - both wheels worked. So, go figure.

[jc5988]

Originally Posted by accel

Not sure I completely follow this topic,... If one has 328i LCI, does that mean eLsd is there and available, or some special coding is necessary?
On another hand, once I accelerated in the sand, and checked my tracks afterwards - both wheels worked. So, go figure.

this might explain why, with 25% lock, old m5 still manage to slip down the hill with one wheel spinning on the roller. not sure how much locking can ELSD provide.

[zhp43867]

Originally Posted by jc5988

this might explain why, with 25% lock, old m5 still manage to slip down the hill with one wheel spinning on the roller. not sure how much locking can ELSD provide.

Theoretically the eLSD (related to Porsche Torque Vectoring it seems) should be able to provide near 100% transfer of power from one side to the other; not sure if it's programmed that way though.

[TheSt|G]

Originally Posted by jc5988

this might explain why, with 25% lock, old m5 still manage to slip down the hill with one wheel spinning on the roller. not sure how much locking can ELSD provide.

eLSD provides 0% locking.

[jc5988]

Originally Posted by zhp43867

Theoretically the eLSD (related to Porsche Torque Vectoring it seems) should be able to provide near 100% transfer of power from one side to the other; not sure if it's programmed that way though.

dont think it will be 100%, ELSD only put very light brake force on one wheel.

i guess maybe only 5-10 percent tq transfer to the other wheel... not much info on ELSD from bmw.

[jc5988]

Originally Posted by TheSt|G

eLSD provides 0% locking.

there is definitely some locking going on, just not as much as real one.

"Electronic Differential Lock

The electronic differential lock permits smooth, comfortable starts on split-friction road surfaces with differing levels of grip. If one wheel starts to spin, the electronic differential lock will brake the wheel as necessary, directing power to the wheel with better grip in the process. The electronic differential lock reduces tyre wear and operates at speeds of up to around 40 km/h. As a software function, it forms part of the electronic stabilisation program (ESP) and traction control (ASR). "

[TheSt|G]

Originally Posted by jc5988

there is definitely some locking going on, just not as much as real one.

"Electronic Differential Lock

The electronic differential lock permits smooth, comfortable starts on split-friction road surfaces with differing levels of grip. If one wheel starts to spin, the electronic differential lock will brake the wheel as necessary, directing power to the wheel with better grip in the process. The electronic differential lock reduces tyre wear and operates at speeds of up to around 40 km/h. As a software function, it forms part of the electronic stabilisation program (ESP) and traction control (ASR). "

It's really not. It's simply braking one wheel to create resistance so that the other wheel is comparatively easier to spin.

[nelsonvr6]

Originally Posted by TheSt|G

It's really not. It's simply braking one wheel to create resistance so that the other wheel is comparatively easier to spin.

A different version of differential with a clutch

[SDemetris]

for what its worth, my friend in cali had a rear caliper seize due to overuse of the Elsd... so i probably wont be going for this

[brakthru]

Hey guys
I know this is an old thread but I'm desperate.
I'm reaching out to anyone who may be able to assist with updating my 2007 335i automatic dsc module to the original software or least something better than the newer version. Here is my situation. As you know, DSC off gets you plenty of wheelspin which use to be the case for me. I normally drive with DSC Completely disabled. Last year I noticed even with DSC completely disabled the car was controlling traction. I no longer could spin the wheels from a stop , cornering or even a slight drift. Dealer saw no codes accept dsc button which they replaced but didn't fix problem. The car has lots of power with jb4. I noticed the problem after installing shorter than stock front tires. So I thought maybe it through dsc off. Dealer updated new software which helped. I think they added elsd. But I still can't spin the wheels in almost any situation. The computer will not let the car lose traction at all. I always had LSD. I'm wondering if the new software added elsd which may not work well with my LSD which can spin both wheels. I have a boost gauge which shows the dme reducing boost several psi when WOT from a stop to kill wheelspin. Frustrating.
It really no fun when you feel traction applying brakes to each wheel and cutting throttle with DSC and dtc off during spirited driving and normal driving the brakes pulse. I bought the car for fun. Not granny driving. Lol. Pulling the fuse or disconnecting the dsc module doesnt work because the car defaults to a failsafe mode. Thanks for any suggestions.

[808AWD325xi]

Originally Posted by thakid22

You read my mind. Yes. I am going to go ahead and flash this module.
I've gotta track down the correct ZB#.

My notes show that my DSC Software # is 6775387. (06 330i)
6776067 belongs to a 2007 335i. I need the software # for a slightly newer model, perhaps a 2008 328i or 335i.

It's harder to locate zb#'s than part #'s.

Anyone know how to find the current zb# for a specific vehicle or module (not my own)?

You can use INPA to display all installed control modules...E90 -> Select E90 -> Functional Jobs -> <F2> Identification. One of the columns will contain the modules hardware number (Part No. as displayed in INPA.)

The hardware number can be used to determine any applicable assembly identification number(s) (a.k.a ZB number, ZUSB, ZB-NR, et. al.)

The programming data and logistics files for a given ECU family are stored in the C:\EC-APPS\NFS\DATA\<EcuFam> folder.

Open C:\EC-APPS\NFS\DATA\DSC90.DAT with Windows Notepad. This example is from SP Daten 50.2:

$ PS10INIT N00000000000000000000000020000000000000 D
$ VERSIONKFCONF: kfconf10.dat
;Zusbauvorschrift vom 21.08.2012 09:55
;SG-TYP: DSC90
;ZB-NR  TYP-NR  HW-NR  IX SW-NR     AM          PIN S CS
4029563,0000000,4029563,A,0000000DA,0FFFFFFFFFD,000,1 Y
6776067,0000000,6776067,A,0000000DA,0FFFFFFFFFD,000,1 6
6776069,0000000,6776067,A,0000000DA,0FFFFFFFFFD,000,1 C
6775389,0000000,6775387,A,0000000DA,0FFFFFFFFFD,000,1 W
6791524,0000000,6791524,A,0000000DA,0FFFFFFFFFD,000,1 C
6862873,0000000,6862873,A,0000000DA,0FFFFFFFFFD,000,1 K
6775387,0000000,6775387,A,0000000DA,0FFFFFFFFFD,000,1 Q

Based on ZB number 6775387, your hardware number is also 6775387. That being said, ZB number 6775389 is also compatible with your DSC module.

The coding for ELD (Electronic Locking Differential) was introduced at I-level E89X-07-03-510 (Progman 25.0):

     12.12.06 Li 07-03-510             DSC   MK60_87.C0A  [EFP34 V, c] C0A_DIFF_LOCK  SW-Sperre E90/91/92/93 330i,335i,330d,335d,123d aktiviert (PA603/364)

The DSC module in my 2009 E92 335i is hardware number 6789304 and it's flashed with ZB number 6789304. It has the DIFF_LOCK option:

C0F_DIFF_LOCK
	wert_02

Originally Posted by thakid22

Alright. I tried to use the new eLsd DSC software on my 2006 330i.
It did not work. WinKFP reports that the software and hardware versions don't
match. From there it won't proceed to overwrite the old version.

So that's a dead end.

If we want eLSD we'll need to buy/source the new updated DSC module/unit then flash it to the vehicle.

You're probably right, but have you tried ZB number 6775389?

[hardr85]

I was looking for info, found this thread and it was very helpful. I wanted to provide a little closure.

The 6775389 ZB number worked on my 2006 330I. It had been a while since I updated the dsc and I forgot you will get the yellow brake, traction control, and abs lights after update, also, your windsheild shield wipers will run almost the whole time during update.

You will have to do steering angle and code the dsc with ncs expert and you will be good. I did the steering angle with tool 32, coded it, then I saw online where someone said he used INPA and went through and activated everything for the dsc In INPA except the bleed routine of course to clear the lights.

I did the alignment with tool 32, and coded it and still had the lights. I did the dsc activations in INPA, turned car off, waited a few minutes and it was good. I did turn the car off after alignment and coding, but lights were still there.

I had tried steering angle alignment with tool 32 before and it did not work. I ended up having to use DIS to get it aligned. That is what leads me to believe the dsc activations in INPA are what worked for me after the coding.

[thakid22]

Originally Posted by hardr85

I was looking for info, found this thread and it was very helpful. I wanted to provide a little closure.

The 6775389 ZB number worked on my 2006 330I. It had been a while since I updated the dsc and I forgot you will get the yellow brake, traction control, and abs lights after update, also, your windsheild shield wipers will run almost the whole time during update.

You will have to do steering angle and code the dsc with ncs expert and you will be good. I did the steering angle with tool 32, coded it, then I saw online where someone said he used INPA and went through and activated everything for the dsc In INPA except the bleed routine of course to clear the lights.

I did the alignment with tool 32, and coded it and still had the lights. I did the dsc activations in INPA, turned car off, waited a few minutes and it was good. I did turn the car off after alignment and coding, but lights were still there.

I had tried steering angle alignment with tool 32 before and it did not work. I ended up having to use DIS to get it aligned. That is what leads me to believe the dsc activations in INPA are what worked for me after the coding.

Did ZB# 6775389 give you E-LSD?
What differences do you notice?
I'd try it myself, but I traded my 330i for a 535i.

[hardr85]

I don't know if it did, how would I test it? I was looking for info because my traction control kicks in when I am on interstate, on even, dry pavement and I accelerate a little hard. Not hard enough for tranny to downshift, but enough where I can feel the torque.

I pulled the abs/speed sensors and there were no marks, I didn't have time to take a good look at reluctor rings. I am starting with easiest possible solution first, software updates to tranny and abs.

I do have a tune, thanks to hassmachine, it is awesome, so I am hoping software updates fix it. I did find a more current tranny update I am going to do tonight. I hope this resolves issue, so I don't have to pull the axle and change rings.

I am still learning everyday, so please let me know an easy was to check if I have E-LSD, since that wasn't the reason for my update, I didn't really pay attention to it.

[sono0312]

Originally Posted by hardr85

I was looking for info, found this thread and it was very helpful. I wanted to provide a little closure.

The 6775389 ZB number worked on my 2006 330I. It had been a while since I updated the dsc and I forgot you will get the yellow brake, traction control, and abs lights after update, also, your windsheild shield wipers will run almost the whole time during update.

You will have to do steering angle and code the dsc with ncs expert and you will be good. I did the steering angle with tool 32, coded it, then I saw online where someone said he used INPA and went through and activated everything for the dsc In INPA except the bleed routine of course to clear the lights.

I did the alignment with tool 32, and coded it and still had the lights. I did the dsc activations in INPA, turned car off, waited a few minutes and it was good. I did turn the car off after alignment and coding, but lights were still there.

I had tried steering angle alignment with tool 32 before and it did not work. I ended up having to use DIS to get it aligned. That is what leads me to believe the dsc activations in INPA are what worked for me after the coding.

Hello,

Have you sorted out this issue? I did DSC flashing on the same module # and encountered the same ads and traction alarms. I am still not possible to get it back to normal...

[Trekz2]

Sorry to bump old thread, any updates how to get elsd working on 06 330. I flashed 6775389 and recalibrated everything, only thing is it said my uif only has 1 write left so I programmed it with out writing uif. Now when I code it with ncs its still showing up as old MK60_87.cXX(don't rember exact value) is that because I didn't write uif it still thinks it's
6775387 when I try to code it?

[juld0zer]

I don't recall any issues flashing a different software to the DSC. I downgraded my 135i to factory level and now I want the eLSD on my 130i so I will attempt it once i get the cable again.

I just recall putting the car to sleep after recoding and calibrating the valves/sensors and waking it, all was good...Maybe the early cars need a little extra patting and stroking to coax into action?

[juld0zer]

Originally Posted by hardr85

I don't know if it did, how would I test it? I was looking for info because my traction control kicks in when I am on interstate, on even, dry pavement and I accelerate a little hard. Not hard enough for tranny to downshift, but enough where I can feel the torque.

I pulled the abs/speed sensors and there were no marks, I didn't have time to take a good look at reluctor rings. I am starting with easiest possible solution first, software updates to tranny and abs.

I do have a tune, thanks to hassmachine, it is awesome, so I am hoping software updates fix it. I did find a more current tranny update I am going to do tonight. I hope this resolves issue, so I don't have to pull the axle and change rings.

I am still learning everyday, so please let me know an easy was to check if I have E-LSD, since that wasn't the reason for my update, I didn't really pay attention to it.

Pull out with the steering wheel turned a bit and give it a good stomp. The eLSD should prevent the inner wheel from spinning excessively.
Alternatively, find a slippery wet road and plant it from a standstill. If it works it should track remarkably straight and you will feel the pulsing brake